# SDR CALA2023122103706

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2023
- Submitted: December 21, 2023
- Operation: Air carrier
- Aircraft: [N38727](https://openairdocs.org/aircraft/N38727), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28797
- Aircraft time: 76,338 hours, 26,895 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 143A940330
- Condition: Cracked
- Location: Fwd Cargo
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023122103706

## Discrepancy

FWD CARGO COMPARTMENT BETWEEN STA 480 TO STA 500, L 21 STRINGER, LONGITUDINAL LAP SPLICE IS CRACK SEE DOT (103-43). REF AAR N/R 9216662. REMOVED AND REPLACED INTERCOSTAL (143A7550-11) AT FORM ATTACHED OP-84 FOR ACCOMPLISHMENT OF HEAT FWD CARGO COMPARTMENT STA 480 TO STA 500, S-21L TREATMENT. PER REF SRM 51-40-02-0G-0 AND DWG #143A7550. INTERCOSTAL WAS FABRICATED AND HEAT TREATED,

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